﻿/*
 * Copyright (c) 2015-2016 Constantijn Evenhuis (blueprints@const.nl)
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
using Blueprints.Validation;
using System.Collections.Generic;

namespace Blueprints.Editing
{
    partial class EditNode
    {
        private readonly Dictionary<string, EditProperty> properties = new Dictionary<string, EditProperty>();
        private IValidatedNode last;
        private int lastVersion;

        internal void SetValidation(IValidatedNode validation)
        {
            last = validation;
            lastVersion = EditContext.Version;

            HashSet<EditProperty> remaining = new HashSet<EditProperty>(properties.Values);
            foreach (IValidatedProperty validatedProperty in validation.Properties.Values)
            {
                EditProperty property;
                if (properties.TryGetValue(validatedProperty.Name, out property))
                {
                    remaining.Remove(property);
                }
                else
                {
                    property = new EditProperty(validatedProperty.Name, this);
                    properties[validatedProperty.Name] = property;
                }

                property.SetValidation(validatedProperty);
            }

            foreach (EditProperty property in remaining)
            {
                properties.Remove(property.Name);
            }
        }

        private bool TryGetValidatedNode(out IValidatedNode validation)
        {
            if (last != null && lastVersion == EditContext.Version)
            {
                validation = last;
                return true;
            }

            if (EditContext.TryGetValidatedNode(this, out validation))
            {
                SetValidation(validation);
                return true;
            }

            validation = null;
            return false;
        }
    }
}